Article

Studia Logica

, Volume 100, Issue 3, pp 545-581

First online:

Importing Logics

  • João RasgaAffiliated withSQIG, Instituto de Telecomunicações and Dep. Matemática, Instituto Superior Técnico, Universidade Técnica de Lisboa Email author 
  • , Amílcar SernadasAffiliated withSQIG, Instituto de Telecomunicações and Dep. Matemática, Instituto Superior Técnico, Universidade Técnica de Lisboa
  • , Cristina SernadasAffiliated withSQIG, Instituto de Telecomunicações and Dep. Matemática, Instituto Superior Técnico, Universidade Técnica de Lisboa

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Abstract

The novel notion of importing logics is introduced, subsuming as special cases several kinds of asymmetric combination mechanisms, like temporalization [8, 9], modalization [7] and exogenous enrichment [13, 5, 12, 4, 1]. The graph-theoretic approach proposed in [15] is used, but formulas are identified with irreducible paths in the signature multi-graph instead of equivalence classes of such paths, facilitating proofs involving inductions on formulas. Importing is proved to be strongly conservative. Conservative results follow as corollaries for temporalization, modalization and exogenous enrichment.

Keywords

Combined logics Importing logics Temporalization Modalization Exogenous enrichment